|The keyboard is going bad. Even if you soft touch type, the same errors may be there. The internal key contact points are very close together to begin with. With use the flexability of each keyswitch is deminished. Just typing can warp the board enough to cause a key stroke or multiple key strokes. I've seen keyboards do that with no one touching the unit. Random(?) key presses. They can be disassembled, cleaned, and reused on occasion.|
Try plugging in a desktop keyboard to the USB port. If it solves the problem, replace the keyboard on the laptop.